Depends on if they are in the kitchen.
If she is in the kitchen then he is right, this is only possible because of the kitchen rule. If she is not in the kitchen and has a pass he is right. If he is in the kitchen it's plausible depending on the % of error. Now, if they are both out of the kitchen he is wrong, and she is wrong for not being in the kitchen, since 2 wrongs make a right she is still right.